The Insider.com

This is going to be a big weekend for Zach Galifianakis -- not only is his new movie, The Campaign, opening to rave reviews but TheInsider.com has learned that Zach will also be marrying fiancee Quinn Lundberg tomorrow in Vancouver, BC.

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VIDEO - Will & Zach Kick Off Promotional Campaign

Last night, Zach and Quinn hosted a rehearsal dinner for 40 people at the Tea House in Stanley Park. The restaurant also Tweeted this picture along with the caption, "Beautiful day for a weeding rehearsal dinner!"

VIDEO - The Campaign's Nude Attitude

News of a Galifianakis wedding first broke in June when Celebuzz got their hands on the wedding invitation, which included a drawing of Zach as a little troll and Quinn as a stunning tall blonde princess.